Commutator segment side surface of which is provided with grooves

The utility model relates to a commutator segment a side surface of which is provided with grooves. The commutator segment comprises a main body (1), trapezoid grooves (2) and implanting portions (4); the main body (1) is in the shape of an L-shaped long strip, the bottom surface of the main body (1) is sectorial, the trapezoid grooves (2) penetrating up and down are symmetrically disposed at middle parts of two side surfaces of the main body (1), the multiple implanting portions (4) are uniformly arranged on an inner side wall of the main body (1), and rectangular grooves (3) connected with the main body (1) are symmetrically arranged on the left and right sides of each implanting portion (4). The commutator segment has the advantages of simple structure, convenient installation, the strong bonding force, low manufacturing cost, high welding strength when a commutator is installed, the long service life and the like.